How do I move a light to another room in my Philips Hue app?

You can do this in 2 different ways. First go to the settings menu by pressing the gear wheel. If you select “Light setup” you can drag (press & hold) lights across the screen to other created rooms. If you select “Room setup” you can create a new room or edit an existing room. Select/ create the room and then check the box next to each light you want to move to that room. Click save when you are done.